Abstract:
PURPOSE: Provided is a method for manufacturing single chain bovine luteinizing hormone(LH) which shows stronger hormone activity than one of natural LH, so as to be used for animal drugs. Thereby, LH is easily manufactured in a high yield as forming LH consisting of alpha and beta short fragments, into single chain LH. CONSTITUTION: A method for manufacturing single chain bovine luteinizing hormone(LH) comprises the following steps of: i) performing polymerase chain reaction to link DNA coding an alpha short fragment of bovine luteinizing hormone(LH) with DNA coding a beta short fragment of the hormone, using 4 kinds of oligonucleic acids bases as primers, to obtain cDNAs of the alpha and beta short fragments and cloning the cDNAs with pUC119; ii) multiplying cloned DNA through PCR to obtain bLH composed of cDNA of alpha and beta fragments, cutting the bLH by restriction enzyme Kpnl/Xbal and linking the bLH to vector pUC119 to form expression vector pcDAN3-bLH; iii) inserting the expression vector pcDAN3-bLH into CHO-K1 and cultivating CHO-K1 at media Ham F-12 including penicillin, streptomycin, glutamine, 10FCS and G418, in the presence of 5CO2 and air, at 37 deg.C for 2 weeks and selecting stable cells: iv) cultivating selected cells at 20 ml of CHO-S-SFM-11 media containing 50 units/ml of penicillin and 50 microg/ml of streptomycin at 37 deg.C for 48 hours, and centrifuging supernatant liquid obtained through the cultivation for 60 minutes to remove cell remnants.
Abstract:
본 발명은 닭에서의 면역원성이 감소된 재조합 3D8 scFv(single chain variable fragment) 항체 및 이의 항원 결합부에 관한 것이다. 또한, 본 발명은 상기의 항체 및 이의 항원 결합부를 암호화하는 핵산 분자와 상기의 항체 및/또는 이의 항원 결합부를 포함하는 조성물에 관한 것이다. 본 발명에 따르면 닭에 쥐 유래 3D8 scFv 항체를 주입할 경우 발생할 수 있는 HAMA 유사 현상 등을 유발하지 않도록 면역원성이 감소되며, 핵산결합능, 핵산분해능 및 세포 침투능 등과 같은 기존 3D8 scFv 항체의 활성을 유지하는 재조합 항체가 제공된다.
Abstract:
본 발명은 사람 CD73 발현 벡터, 이를 포함하는 세포주 및 형질전환 복제동물에 관한 것이다. 본 발명에 따르면, 새로운 면역거부반응 조절기술의 개발로 고부가가치의 장기이식용 미니돼지의 생산에 기여할 수 있으며, 새로운 장기 이식용 형질전환 복제 돼지의 생산으로 이종 장기 이식의 실용화를 촉진할 수 있다.
Abstract:
The present invention relates to a knock-in vector that can target a complement regulatory protein (decay accelerating factor, DAF) gene and a human alpha 1,2-fucosyltransferase (HT) gene in a position of an alpha 1,3-galactosyl transferase (alpha 1,3-GT) gene, a cell transduced with the vector, a fertilized egg that is nuclear transplanted in the cell, a transgenic animal that is knocked out by the vector, and a method for producing the same. The knock-in vector of the present invention can be used to produce a transgenic animal in which hyperacute rejection that occurs in xeno-transplantation is controlled, so that the knock-in vector can be widely used for the production of a transgenic animal that can be used for effective xeno-transplantation.
Abstract:
본 발명은 복제동물의 생산성 향상을 위한 동결융해 공여세포의 처리 방법에 관한 것이다. 보다 상세하게는 급속냉동된 체세포를 융해하여 바로 핵이식에 사용하는 단계를 포함하는 동결융해 공여세포의 처리 방법에 관한 것이다. 본 발명에 따르면 존의 복제동물 생산에서 가장 중요한 과정인 공여세포의 처리 과정에서 동결융해 후 추가적인 배양 없이 곧바로 핵이식에 사용함으로써 핵이식 과정을 단축시킬 수 있으며, 이를 통해 복제(형질전환 복제) 동물의 생산 효율을 향상시킬 수 있다.
Abstract:
PURPOSE: A method for treating frozen and thawed donor cells for improving the productivity of cloned animals is provided to shorten nuclear transplantation without additional culturing. CONSTITUTION: A method for treating frozen and thawed donor cells comprises: a step of culturing somatic cells for synchronization to a G0/G1 phase; a step of quickly freezing the somatic cells at -70 to -120 deg. C; and a step of thawing the somatic cells and transplanting. The somatic cell is transformed.
Abstract:
A recombinant human von Willebrand Factor(vWF) expression vector is provided to produce the vWF of a human blood coagulation factor through milk of a pig, thereby mass-producing a highly-valued medical protein through cattle. The recombinant human vWF expression vector includes a nucleotide sequence described as SEQ ID : NO. 1 and is constructed by linking a vWF gene of human to the middle of a bovine alpha-S1-casein promoter having a restriction enzyme site Not I and Sal I of a gene for micro-injection and a hGH Poly A. The primer sequence for identifying the introduction of the vWF gene in a genomic DNA of a transgenic pig to which the expression vector is introduced has SEQ ID : NOs. 3-10. The transgenic pig secrets a human vWF agent as milk by introduction of the expression vector thereinto.
Abstract:
PURPOSE: Provided are a transgenic pig capable of producing human erythropoietin and a preparation method thereof, thereby stably and economically producing a large amount of human erythropoietin from the transgenic pig's urine. CONSTITUTION: A recombinant vector of human erythropoietin, pCR2.1 hEPO, includes EPO gene between KpnI of rat U II promotor having EcoRI and KpnI sites and SalI of SV40 Poly A having SalI and EcoRV sites. The transgenic pig is transformed by the recombinant vector, pCR2.1 hEPO and produces human erythropoietin in its urine.